Ubuntu: Minecraft High CPU (125%~) using openJava 6/7


if I run Minecraft with OpenJDK 6 or 7 on my Ubuntu 12.04 machine, it eats nearly of the CPU and I have lags during minecraft gameplay.

What I have tried so far:

  • start minecraft with something like java -Xmx2044M -Xms1024M -jar minecraft.jar
  • Using recommended Nvdia drivers
  • Using latest beta nvidia drivers
  • Tested minecraft with both openJava Versions (6/7)
  • Switched between Unity 2D and Unity 3D
  • Verified that I am using the latest graphic engine that is used by Minecraft (LWJGL)

My machine is an AMD Phenom 955x using Ubuntu 12.04 with a Nvidia GTX 275

Until now nothing changed the bad performance of minecraft. Suggestions are much appreciated, thank you in advance for any help!


You could try using OptiFine - it's worked well for me in the past.

The SSP mod also works very well; Minecraft singleplayer now runs as a shell of SMP (thus enabling LAN connection), and this mod allows Minecraft to run like it used to, just as pure SSP.

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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